@book{prozid,
		key = "PROZID",
        author = "Kugi, Andreas",
        title = "Skriptum Prozessidentifikation",
        year = 2009,
        language = {ngerman}
}

@book{angst,
		key = "AST",
        author = "Gurker, Werner",
        title = "Angewandte Statistik",
        year = 2011,
        language = {ngerman}
}


